Here comes the shortest weekend of the year: At 2 a.m. Sunday, clocks across the United States move forward an hour.

The 100-year-old tradition is known for worsening Monday mornings and suspected of increasing heart attacks. And perhaps its days are numbered.

More than 20 states, including Michigan, last year had bills introduced to end or change the twice-per-year clock adjustment (Hawaii and most of Arizona are the only ones not observing it, for now). The Michigan proposal sought to put Michigan permanently in daylight saving time, with no more clock-switching. But like other local efforts before it, this one didn't get much traction.

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Daylight saving time(Photo: Detroit Free Press)

In Florida, a similar bill is headed to Gov. Rick Scott's desk after the state Senate approved it 33-2 on Tuesday, the Associated Press reports. If it's approved, it would then be up to Congress to change federal law as it applies to the Sunshine State.

The nationwide clock-switching began March 19, 1918, during World War I, as an effort by the federal government to conserve coal, USA TODAY reports. After officially ending later that year, "it persisted in some form at local or state levels for decades before being finally being officially recognized again nationally in 1966 by the Uniform Time Act," USA TODAY reports.